I know Silverstone air penetrators are really designed to be push fans (as in push into the case), but id rather all my LED fans matched, so would they be that bad as pull fans? I mean I know they will work, but will they work well? Or give a low pull performance?

I currently have an Antec 300, but plan on upgrading to a Corsair Obsidian 650D. In my Antec I would like 2 as push fans in the front, and 1 as a pull fan at the back. In the Corsair I would put 2 as pull fans on top, quite possibly for a radiator, and one on the back, probably as a pull. I would use the 200mm fan at the front as the push, and a 120mm on the bottom as push if I felt the airflow was insufficient. This would be another silverstone air penetrator.

I've always found that push is better than pull. Even with gelid wings at fullspeed, there really wasn't much air movement through my rad. pull < push < push/pull

Gelid Wings need to be shrouded for any kind of decent performance. The fan blade geometry makes for amazing static pressure, but the struts at the end leave a giant gap between the frame and the blades that result in a ton of recycled airflow.

To the OP, AP121/141's are great exhaust fans, in fact in my experience they perform better as a rear exhaust fan than as a front intake. (assuming there's a hard drive cage behind them) They also make great side/bottom fans. The terms push/pull are typically used for heatsink and radiator applications, not for the chassis.